I'm having the typical transmission grinding problems on my '07 350Z, however even when I shift at 3000 rpms it still grinds from 1st to 2nd. The same is true from 2nd to third. If I push in the clutch and let the rpms drop (aka, wait a second or two) and then shift, everything is fine. Of course this makes the car lose a lot of speed and makes me get about 13mpg. I brought it to the shop and they said they couldn't find the problem. Consequently, when I got my car back I also started experiencing the bucking problem.

I thought it may be a synchonizer problem, but I'm not sure. Does anyone else out there have this same problem or some input as to how to fix it?

 

i get the same from second to third...(no solution) -03' Z
it usually happens when the tranny is cold.. once mine is warmd up it stops..

 

Just take it to the dealer- if it isn't from abuse you should get it fixed under warranty.

 

The problem is that I bought my car in the US, but have since relocated to Bogota, Colombia. The Nissan mechanics here in Colombia are good, but they typically need a little direction. That's why I was hoping to get some advice.

As for abuse, I'm typically sitting in traffic at a stop, so there isn't much abuse there. Even on open roads I don't typically exceed 4000 rpms for several reasons. One, I don't typically drive too fast, and two the roads here are very poor.

 

Mine does it regardless if the tranny is hot or cold.

 

Well typically the grind comes from a bad syncro- so let you mechanics know your getting a grind and you suspect a bad syncro.

 

I brought it to the shop and they topped off the transmission fluid slightly and aligned the tires. It shifts a little better now, but still grinds a bit. In a few weeks when they change the slave cynlinder they said they would also change the transmission and rear differential fluid. Hopefully that will solve it.

 

just brought mine to the dealer for 3rd gear grinding. I'm out of nissan warranty but thank god I bought bumper to bumper warranty on the car so their replacing the whole trans. this is after alot of fighting them though